Sectional boiler furnace



Sept. 8, 1931. R. w. MENK 1,322,707 I i SECTIONAL BOILER FURNACE FiledAug. 13, 1926 3 Sheets-Sheet l Sept. 8,1931. R. w. MENK. 1,822,707

SECTIONAL BOILER FURNACE Filed Aug. 13,1926 5 Sheets-Sheet 2 P 1931. R.w. MENK SECTIONAL BOILER FURNACE Filed Aug. 13 1926 S Sheets-Sheet 52520922 077 Ema/w W MEN/C Patented Sept. 8, 1931 UNITED STATES,

ATENT OFFICE RUDOLPH W. MENK, F J'OLIET, ILLINOIS SECTIONAL BOILERFURNACE Application filed August 13, 1926. Serial No. 128,994.

My present invention relates to furnaces of the boiler type and has moreparticular reference to a structure of this character that isseparately'formed, in opposing sec- 6 tions so that the same may beshipped in 710 ed or otherwise secured together and the outfit is madein two semi-cylindrical sections so I that they may be assembled inopposition to each other to provide a complete cylindrical structurewhen completed. With my present invention I am enabled to provide astructure that in its knock-down form may be readily handled and may bepassed through small openings in a building thereby avoiding thenecessity of having to deliver andinstall the furnace while the walls ofthe building are under construction. Also the parts are so arranged forassembly that the respective sections may be spaced apart by means of anintermediate section for the purpose of enlarging the capacity of thefurnace whenever desired. The arrangement and disposition of the partsare such that I secure a greater area of heating surface for the water,and by the employment of certain instrumentalities I have been able tocreate'a longer draft or path to be traversed by the products ofcombustion while at a high temperature. Among the divers objects of myinvention are the provision of a structure of this character thatembodies dependability in operation, economy in manufacture, compactnessin construction, and novelty in the arrangement and disposition of theparts. I prefer to carry out my invention and to accomplish the diversobjects thereof in substantially the manner hereinafter fully describedand as more particularly pointed out in the claims, reference being madeto the accompanying drawings that form a part hereof.

In the drawings:

Figure 1 is a central vertical section through the body of the furnaceshowing the arrangement and disposition of divers parts thereof.

Figure 2 is a vertical side elevation of the complete furnace installed.

Figure 3 is a vertical elevation, of the rear semi-cylindrical section,looking at the same 1 from the hollow side thereof.

Figure 4 is a view similar to Figure 3 illustrating the frontsemi-cylindrical section.

Figure 5 is a horizontal transverse section taken on line 55 of Figure 2and looking in the direction of the arrows.

Figure 6 is a fragmentary transverse section on about the plane ofFigure 5 showing the manner of increasing the dimensions of the furnaceby means of an intermediate section.

Figure 7 is a vertical fragmentary section taken on line 7-7 of thestructure illustrated in Figure 6. i

As will be seen, the furnace is formed from two cylindrical hollowsections A and B; The former section A is the front section in which isprovided the usual openings for the fuel, for the clean-out and foraccess to the grate bars and the other section B is the rear sectionwhich is provided with an outlet 10 for the discharge of the products ofcombustion to the chimney flue. The semi-cylindrical sections A and Bare provided, adjacent their edges, with lateral ears or lugs 11arranged in planes opposite each other and adjacent the upper and lowerportions of the respective sections, which lugs are provided withapertures through which clamping bolts 12 are passed, so as to draw thesections tightly together. These sections are preferably formed of sheetmetal plates, the vertical walls 13 and 14 being disposed parallel orconcentric to each other to provide outer and inner spaced walls betweenwhich there is a chamber 15 for the circula tion of water. The loweredges of these plates are connected by annular bottom rings 16 so as toclose the lower portions of the water-chambers 15 and said sections aremounted upon and supported above the floor upon the usual base thatprovides an ash box 17 (Figure 2). At their upper end portions thedouble walls are continued over laterally in a horizontal direction toprovide the upper and lower spaced Walls 18 and 19 to provide shallowrecesses for'the reception of a suitable furnace cement 21 that isplaced therein while in a plastic eonditlon and compressed and spread bythe clamping action of the bolts 12' when the respective sections A andB are drawn together. Similarvertical separator walls or end plates 22spaced back of the vertical edges of the'semi-cylindrical walls 13 and14 provide similar recesses along the vertical portions of the sectionsA and B for i the reception of the cement 23, so that the joint betweenthe respective sections isv rendered air-tight and gas-tight afterassembly in the manner above described. The sections A and B, on accountof their small transverse dimensions may be readily inserted through asmall'cellar window or carried separately through a narrow cellar doorof a buildingwhere it is desiredtoinstall the'furnace, without theinconvenience of having to knock outportions of the wall of the buildingas is so often the case with furnaces made of an integral cylindricalshape. The sections A and B including their domes do not communicatewith each other, as will be obvious from the foregoing description,because of the walls or end plates of'the domes and the walls or endplates 22 of the cylindrical portions of the sections, but in order toobtain a distribution of the steam or hot water from the sections, thedomes are provided with outlets 24 into which suitable pipe connections25 are screwed that lead to a union or T-coupling .26 so that the steamor hot' water arising from the cylindrical portions into the domes willpass out through the above described connections and be distributed fromthe T- coupling to leads and. radiators in the heating system.

The front section A is provided with a water-chamber X that projectsinwardly from the inner wall 14 of this section in a plane above thefuel opening and said chamber X is formed by a horizontally disposedplate 27 that extends across the entire section and projects inwardly toa point inside the plane of the edges of the cylindrical wall of thefront section where said plate is f-nosed or-curved outwardly andupwardly as at 28 and continues as an upwardly inclined wall 29 totheinner wall 14 of the I This chamber is so constructed and positionedthat the products of combustion arising from the fuel upon the grateswill stri'keLthe bottom wall 27 and be deflected away from the frontcylindrical wall 14 toward the rounded edge or nose 28 and then passupwardly against the walls 10 of the semi-circular d-om'es'and outthrough the outlet 10 of the section B.

Therear section B of the structure is provided with a water-chamber Y,the walls of which are disposed in reversed relation to those of thechamber X and comprise a horizontal top plate or wall 30 thatprojectsfrom the inner wall 14 of the section B toward the edgesjof thecylindrical section where the,

plate formingsaid wall is nosed or rounded outwardly and downwardly asat 31 and continues in a downwardly inclined direction to provide theoblique bottom wall 32 which'terminates at and is secured to the innerwall 14 of the section B. As seen, the chamber Y is also of triangularshape in cross section, the base of the triangle in this instance beinguppermost andthe hypotenuse provides the lower wall of the chamber, thesaid structure being thereby a reversal of the arrangement of thechamber of the front section A. It will also be seen that the inclinedor oblique walls 29 and 32 of the chambers are substantially parallel toeach other as are also the hori- Zontal walls 27 and 30, and theso-called nose portions 28 and 31 are separated from each other anddisposed one above the other so as to provide an elongated passageway 33of restricted dimensions through which the products of combustion mustpass and beyond the passageway they enter the upper portion Z of thefurnace which, as will be seen, is of greater dimensions and capacitythan the passageway so that they linger in ignited condition prior toleaving the structure. In order to assist'combustion in this upperportion Z the door of the upper opening may be opened for the admissionof air thereto. The inclined 'wall 32 of the chamber Y deflects theproducts of combustion upwardly and forwardly toward the other chamber Xso that the path of the products of combustion is circuitous and thesehot gases are brought into intimate contact with a considerable area ofheating surface in the furnace. The inclined walls 29 and 30 will, ofcourse, shed 01f dust, soot and foreign matter due to their slope andthe horizontal wall 30 of the chamber Y may be readily cleaned 3 thechimney, which pipe is provided with a of thesoot, etc, bymeans ofascraper or'other device inserted through the upper opening a: above theupper edge of the inclined wall 29.

In orderto baflie, or retard the flow of the products of combustion andvto divide the same in the combustion chamber to cause the hot gases toengage theside walls in the upper portion of the structure, I haveprovided one or more tubes 34, (preferably two), that are positionedvertically upon the inner edge portion of the top horizontal wall 30 ofthe upper chamber, in front of the outlet and which extend upwardly tothe inner lower wall 19 of the dome of the rear section B. These tubesare water-contained and establish connection between the chamber Y andthe dome above the same, and the space between the tubes may be closedby placing therein suitable fire brick 35 so that said brick and tubesprovide a baiile in front of the discharge outlet and prevent a directflow of the gases to the outlet.

The return water from the radiators and lead pipes is fed back into thelower portions of the sections A and B by means of a union or T-coupling36 upon each side of the furnace at about the location of the jointbetween the respective front and rear sections A and B (Figures 2 and5), and from these conplings the water passes into the cylindricalwater-chambers through inlet stubs 37 on p the respective sections.

From the outlet 10 the products of co1nbustion pass into the fine orpipe 88 leading to vertically disposed offset portion 39 that is dividedlongitudinally in a vertical direction by a partition 40 that extendsdown below the plane of the lower edge of the outlet 10 and provides adown passageway 41 and an up passageway 42 upon opposite sides thereof.The construction just described is controlled by means of a butterflydamper 43 that may be adjusted to permit the products of combustion toflow either straight into the chimney flue or downwardly through thepassages 41 and 42 which latter will somewhat retard its flow andthereby retain the heated products within the confines of the furnacefor a longer period than when the draft or flow is direct to thechimney.

In Figures 6 and 7 there is illustrated the manner of increasing thecapacity of the boiler furnace by interposing an intermediate section Cbetween the facing or abutting edges of the semi-cylindrical sectionsand domes. When it is desired to employ the interinediatesection C, theclamping bolts 12 are released and the abutting edges of the sections Aand B separated a distance sufficient to permit the insertion of theintermediate section, after which longer bolts are inserted in the lugs11 and the structure firmly and tightly drawn together. The intermediatesection C comprises spaced parallel vertical walls 13 and 14that'provide continuations of the respective inner and outer walls ofthe semi-cylindrical sections A and B and the edges of these verticalwalls are connected by the closure walls 2O so as to provide a shallowrecess oneach side of the intermediate section facing the recesses ordepressions in the edges of the sections A and B and aflord a space inwhich the cement 23 may be placed in order to provide air-tight andgas-tight joints where the sections are clamped together. The inner andouter walls 13 and 14 and the closure walls provide a water-chamber 15that leads up to a horizontal dome element corresponding in section withthe dome ele ment of the sections A and B. The side members or legs ofthe intermediate section 0 are connected intermediate their ends by ahorizontal tubular member Z that is formed concave on oneof its faces asat lfl, so as to fit against the nose portion 28 of the water-chamber Xprojecting from the front section A of the furnace and the lower wall ofthis tubular Inember'Z is in the horizontal plane of the bottom wall 27ofsaid chamber X. The concave portion 44 of the tubular member projectsbeyond the vertical plane of the upright legs of the intermediatemember, as seen in Figures '6 and 7 and the portion of the tubularmember opposite thereto is set back from the plane of the opposite edgesof the legs so as to not close the passageway 33-between thewater-chambers X. and Y. The intermediate section C is not incommunication with the waterchambers and semi-cylindrical portions ofthe sections A and B and it will be understood that the hot water orsteam will be discharged from the dome of the intermediate sectionthrough an outlet stub corresponding with stubs and leading to thecoupling '26 which is changed from a T to a cross.

it will also be understood that the return water is fed back into theintermediate section through the couplings 36 which are likewise changedfroin .Ts to crosses. If it is desired to further enlarge the furnace orincrease its capacity, other intermediate sec tions may be utilizedalongside ofthe section C, and when more than one of these intermediatesections are employed, the dimensions of the elongated passageway 33niaybe modified and controlled by omitting the horizontal tubular member Zof the intermediate section that is nearest the waterchamber Y; or, inlieu of omitting this member, the same may be reduced in transversedimensions.

It will'be obvious to others skilled in the art to which this inventionpertains that div-- ers modifications or refinements of the structureillustrated may be made without departing from the principles involved,and I therefore desire it understood that all such changes are fullycontemplated as coming within the scope of the appended claims.

lVha-t I claim is e 1. A boiler furnace comprising a base, a pluralityof hollow-wall sections secured together and mounted thereon to providea firepot in their lower portions and having an outlet for the productsof combustion, overhanging hollow domes abutting each other the upperends of said sections, irregularshaped water chambers projectinginwardly from the respective sections and overhanging the fire-pot, oneof which is below said outlet, one of said chambers having asubstantially horizontal base wall and the other chamber having aninclined base wall, and tubes disposed in front of said outlet andcommunicating at opposite ends with the interior of the adjacent waterchamber and overhanging dome above the same.

2. A; boiler furnace comprising oppositely disposed semi-cylindricalsections having hollow walls, one of said sections provided with anoutlet for the products of combustic-n, overhanging semi-circular domeshaving hollow walls forming continuations of the walls of the respectivesections, waterchambers extended inwardly towards each other from theinner walls of said sections, the inner portions of said chambers beingadacent each other, one of said chambers having a wall inclined upwardlyfrom its inner and the other chamber having a wall inclined downwardlyfrom its inner edge, and a tube connecting the dome and water cnamher ofthe section provided with the outlet and disposed in the path of theproducts of combustion passing to: said outlet.

A boiler furnace comprising oppositely disposed semi-cylindricalsections having hollow walls, one of said sections provided with anoutlet for the products of combustion, overhanging semi-circular domeshaving hollow walls forming continuations of Lil the walls of therespective sections, waterchambers' extended inwardly towards each otherfrom the inner wallsof said sections, the inner portions of saidchambers being adjacent each other, one of said chambers having a wallinclined upwardly from its inner edge and the other chamberhavin-g awall inclined downwardly from its inner edge, two spaced tubesconnecting the dome and water-chamber of the section having the out- Nt,and a bafiie wall. extending between said tubes and disposed in the pathof the products of combustion passing to said outlet.

i. A boiler-furnace comprising a base, a plurality of opposinghollow-Wall sections secured together and mounted on said base toprovide a fire-pot, a chimney fiue leading from the upper portion of oneof said sections, irregular shaped water chambers overhanging thefire-pot from the sections, the inner portions of the base Walls of saidchamhere being contiguous each other whereby to provide a restricted.passageway between their inner edges, the- Walil's to the water RUDOLPHMENK.

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